Merge-time fix for #666. The strict settings reader plus the retry after a
throw is right for a read that lands mid-write, but a settings.json that
stays broken (a hand edit with a trailing comma) made every session, keep-warm
off included, re-read the file and log a line every 60 seconds until it was
fixed (11 reads and 11 log lines in ten simulated minutes for one session).
The settings read now fails inside `evaluate()`: a given failure is logged
once until a read succeeds, and the retry is armed only for a session that
could nudge (its choice not `false`, the exporter `injected`, a warm report).
Other throws keep the generic retry in `schedule()`.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Merge-time fix for #666. A nudge only goes out inside the last five minutes
before `expiresAt`, so the check armed a whole `KEEP_WARM_LEAD_MS` after a
failed write landed at or past the expiry and stopped with "too close to
expiry": the retry the status promised never happened. The window
`beginKeepAliveTurn()` opened also stayed open for its ten-minute ceiling
with no turn running.
A failed write now ends the window (`endKeepAliveTurn()` joins
`KeepWarmSessionView`; `Session` already has it) and re-arms at
`min(now + KEEP_WARM_RETRY_MS, expiresAt - KEEP_WARM_LAST_CHANCE_MS)`. The
test advances the clock and sees the second write, and a second one pins
that the retry never lands past the last-chance line.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude Code draws its prompt suggestion in an empty composer, the first letter in the reverse-video cursor cell and the rest faint, so a plain capture read it as typed text and keep-warm never nudged those sessions. The keep-warm pane read now uses capture-pane -e and drops the suggestion before checking the composer.
Also from review: an off status carries no window, automation and an unreadable composer retry instead of stopping, a failed evaluation re-arms a retry, a trigger during an evaluation queues one follow-up that remove() cancels, and the cap's clock is seeded from lastSubmitAt for pre-upgrade state.
Only a human spends an idle alert, but the keep-alive turn resolved an unseen one three ways: its working transition, its stop hook, and its own idle prompt replacing the item with a pre-acknowledged one. While the turn runs, a pending idle item is now left exactly as found, the page's stop handler returns on the keep-alive reason before clearing hooks or raising Response Complete, and session:working/session:idle carry keepAlive so the stuck-detection timer neither restarts nor re-arms.
The window that marks the turn closes on its own idle prompt or any other submit instead of a fixed three minutes, which a slow turn's idle prompt (sent a minute after the turn ends) could outlast. The service keeps the default and cap in memory, read through a strict reader so a mid-write read is retried rather than kept, and the cap is clamped before the strict settings save.
Claude Code lets a subscription's one-hour prompt cache expire after an hour idle, and the first turn back re-writes the whole conversation at the cache-write rate; nearly every gap over an hour goes cold, while the saving is concentrated in gaps of one to four hours. Codeman now sends one short keep-alive turn five minutes before the expiry Claude Code reports on its statusline, so the next real prompt still reads the conversation from cache, and stops two hours (configurable) after the last real prompt.
Codeman owns the idle policy for these sessions, as agreed in Discussion #554: a launch with keep-warm on also carries idleCompaction: false in its one --settings JSON, so Claude Code's own idle compaction cannot replace the conversation with a summary a minute before the nudge. It is decided once per launch (keep-warm on, the statusLine exporter injected, Claude Code 2.1.290 or newer, an unknown version fails closed like --name), recorded on the mux record, and picked up by any relaunch; a launch with keep-warm off is byte-identical. A session switched on after launch is kept warm best-effort and the readout says so.
Every guard lives in one pure rulebook: the opt-in (an agent-spawned session does not inherit the app default), a launch that reports cache state, a warm 1h cache with enough tokens at stake and no compaction this gap, a live pane, no usage-limit pause, no respawn, Ralph, task or waiting agent, idle, no open dialog, an empty composer and no recent keystroke. The nudge is a submit and moves lastSubmitAt, which the response viewer's conversation correlation needs; the cap counts from its own persisted lastRealPromptAt instead. Read My Mind drops the exact nudge text, and the turn's stop hook and idle prompt open pre-acknowledged so nothing alerts. The last cache report and the clock survive a restart, so the timer re-arms.
Codeman maintainer